Chinese name: 苗栗國的石虎少女
Japanese name: 苗栗国のヤママヤー少女
From Visual Novel Database:
Developer: Erotes Studio
Released on 14 December 2019.
Game contains 5 CGs altogether.
Game contains 9 BGM and 2 songs with vocals.
Initial gameplay video on YouTube by Heuster Heu (OP at 10:20)
Chinese gameplay videos with author narration and commentary on YouTube by 他口燒麻糬 (OP at 13:07 in first video above, ED at 1:36:31 in second video above)
Full review of game:
Steam store page: